# Network Diagnostics

> Automated network troubleshooting and diagnostics for WSL/Linux environments

- Skill: `majiayu000/network-diagnostics` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/network-diagnostics`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/network-diagnostics/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/network-diagnostics

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# Network-diagnostics

## Instructions

For network troubleshooting:
1. **MTU Issues** (common in WSL)
   - Check current MTU: ip link show
   - Test different MTU: sudo ip link set dev eth0 mtu 1350
   - Common WSL MTU: 1300-1400
2. **DNS Resolution**
   - Check /etc/resolv.conf
   - Test with: dig google.com, nslookup google.com
   - Try different DNS: 8.8.8.8, 1.1.1.1
3. **Connectivity Tests**
   - Ping gateway: ip route | grep default
   - Traceroute to destination
   - Test ports: nc -zv host port, telnet host port
4. **Firewall/Routing**
   - Check iptables: sudo iptables -L
   - Review routes: ip route show
   - WSL: Check Windows Firewall
5. **Service Status**
   - Verify service is running
   - Check listening ports: ss -tlnp, netstat -tlnp
- Generate scripts to persist fixes
- Include checks for WSL vs native Linux
- Add rollback mechanisms


## Examples

Add examples of how to use this skill here.

## Notes

- This skill was auto-generated
- Edit this file to customize behavior